code: def forward(self, inputs, mask=None):
      return torch.mean(inputs, dim=1)
  
imports: import logging
  import torch
  from ludwig.modules.attention_modules import FeedForwardAttentionReducer
  from ludwig.utils.misc_utils import get_from_registry
  from ludwig.utils.torch_utils import LudwigModule, sequence_length_3D
label_desc: Use image node_id 1 for calling the ReduceMean obj's underlying member method code with example usage: obj.forward(inputs, mask) and returns: torch